John d



(No Maciel.)

J. RRVERELL. MERCURY GAS GOVERNOR.-

,664. latentculv Apr. 8, 1884.

Erica.

PATENT Joan D.V nvEnELL, or NEW Yoan,

ASSIGNOR TO WILLIAM QUERY, OF

BROOKLYN, N. Y.

MERCURY GAS-GOVERNOR.

SPECIFICATION forming part of Letters Patent No. 26,664, dated April 8, 1884.

Application filed February 2, 1384. (No model.)

To LEZ whom it may concern:

Be it known that I, Jenn D. AvERELL, a citizen ot' the United States, residing in the city, county, and State of New York, have invented a new and useful Improvement in Mercury Gas-Governors, of which the following is a specification. f

This invention relates to an improvement in the construction of the class of gas-governors in which the regulating-valve is suspended from the center of an inner and outer inverted cup floating in mercury, and both the regulated and unregulated pressure of the gas acting on the valve as the regulating medium of the governor, and in which the governor has a cap over its case, which cap is provided to be locked to the ease.

The object of the invention is, first, to provide the regulating-valve against jarring or trembling during its close cutting off the gas supply to the governor. 'Said object is, secondly, to providev againstoverowing the mer-` cury seals, to stop any flow of mercury into the valve-chamber upon the valve and into the meter, and thereby causing the destruction of soldered joints of brass-work and parts coming in contact with mercury. Said object is, thirdly, to have, in connection with the regulating-valve, a catch or stop within thelocked case ofthe governor, for the lpurpose of stopping the valveentirely off its seat for the alternate test of the loss of gas by allowing the gas to pass through the governor without regulating its pressure.

The first part of the improvement consists in the arrangement and` construction of the regulating-valve and its Boating cups with a ballast or balance-weight, so as to have their center of gravity considerably below their line ofbuoyancy, and by this means render the motion of lthe valve from and to its seat stable and steady, and obviating the jarring and trembling of the valve during close cutting off the supply. The second part consists in constructing the inner or covered sides by the inner cup of the mercury-chambers higher than the outer, and the exterior side with au over- `flow-aperture, so that in filling the mercury seals, which are connected, the mercury cannot be raised above said overflow, and cannot overflow into the valve-chamber in pouring it properly. The third part consists in providing the top guide-plate with a pivoted catch or stop, which can be turned upon the guideopening, and thereby hold the top end of the valve-rod down, and thereby the valve entirely below the valve-seat, and allowing the gas to pass entirely unregulated, for the purpose be fore stated.

The drawings annexed represent, in Figure 1, a centrallongitudinal vertical section ot' the governor with my improvements. detached top view of a portion of the top guideplate with my improved valve-rod stop. Fig. 3 is a detached face view of the opening in the partition between the two mercurycharnbers lof the governor.

A represents the governor-case, which has the gas-inlet B attach ed to the gas-meter, and has the gas-outlet C, to which the house-pipe is connected. In the lower portion of the case are arranged the inlet or valve chamber l) and the discharge or outlet chamber E. f In the horizontal part F of the partition between said chambers is made the valve opening and seat G. The regulating-valve H is arranged Fig. 2 is a under the seat G, and is attached to the vertical valve-rod I, the bottom end of which is guided in the bottom guide-plate, J, and the top end 0i' the same is guided in the top guideplate, K. In the. portion of the case between the top guide-plate and the chamber D and E are arranged the mercury-chambers L and Ml and the inverted cups .N and O. Said cups are made with a crown, to render thenivery stift. They are both attached to the valve-rod I centrally below the top guide-plate.

P represents the cover of the governor, which is hinged at R to the case A, and has a loop joining a secondary loop ou the opposite side of the case. In these loops a pad or other lock is applied for locking the coverto the case.

The cups N and O are made circular, and concentrically attached to the rod I, upon which, below the valve, is attached the ballast or balance-weight Q. Said weight may be cast or formed on the valve, or it may be separately attached to therod byaserew-nut, S, as shown; but its weight and dimension are properly proportioned to the area ofthe valve and those -trically arranged. The outer side of the chamber M or the case A has two apertures, T and U, which are plugged by small screw-plugs T', and the aperture T is arranged at the bottom of the chamber M, and the aperture U at the proper level of the mercury. The inner side, L", of the chamber L is constructed to rise abovev the aperture U. A large notch or passage, V, is made in the partition between the said chambers, so that both freely communicate the mercury.` After the governoris attached to the meter and ready to receivethe mercury, the plug T is withdrawn from the aperture U land the mercury is poured in, filling both chambers until the level of said aperture U is reached. The iiow is then stopped and the aperture is again plugged. The gas may now be turned on by the opening WV around the valve-rod. The gas passes under the inner cup, N, and also through the valve-seat G into the discharge-chamber E, and into the room or building pipe by the outlet G. By .means of the opening X in the partition between the chambers L and M, the gas passes under the cup O..

Upon the top guide-plate, K, is employed the pivoted vcatch or stop Z. It is secured by the screw or rivet Y, and is made so that it can be turned with its loose end over the guideopening, holdingthe cups and valve down so as to allow a free passage of the gas through the governor, allowing the gas to pass unregulated. A

What I claim as my invention, and desire -to secure by Letters Patent, is

1. The combination, in a pressure-regulate ofthe valve H, its guide-rod I, the cups N and O, with removable ballast orl weight Q, arranged on the rod below the valve, whereby its center of gravity is lowered, and the apparatus is thereby rendered more steady, substantially as set forth.

2.` The combination, in a pressureregulator, of the spider guide-plate K, having the stop Z, the lower guide-nut, J, the weighted valverod I, with the interposing valve and cups, whereby the mercury-cups and valve are more securely heid in a vertical central position when lowered, substantially as described.

3.' The combination of the top guide-plate, K, with the stop Z and its pivot Y, arranged to stop the rod I, substantially as and for the purpose herein stated.

In testimony whereof I hereunto set my hand.

JOHN D. AVERELL. In presence of R. BOEKLEN, H. L. VAN SYcKEL. 

